Subject:
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Re: Questions about doing a museum show
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Newsgroups:
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lugnet.trains.org
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Date:
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Tue, 18 Jul 2006 01:24:14 GMT
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Viewed:
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3759 times
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In lugnet.trains.org, Christopher Masi wrote:
> So, a way to run the engines only when people
> are present seems like the way to go, but I
> don't have any information for doing that.
Either drive the whole set-up from an RCX with some sensors to detect when
folks are present at certain places around the layout (no need for LDC here,
just "power on / power off ability might be enough). If you don't like the RCX
running a train that long (mine got slightly warm running the GBC train), set
the power via a normal train controler, but run the wires from the controler to
the track through a poalrity switch controled, again, by the RCX. Now you have a
robotic assistant to "throw the switch" when guests are present, and shuts it
down when there's no motion in the room for a while.
For bonus points, use an IR source (like a security system) to shine an IR
beam across the room and into a LEGO light sensor. Beam breaks, turn train on,
until 5 minutes have elapsed. Reset timer every time the light sensor changes
state.
Or you could use the the US sensor on the NXT, for the "latest greatest"
approach, and be the first to run a train display under the control of a NXT.
--
Brian Davis
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Message is in Reply To:
 | | Re: Questions about doing a museum show
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| Gail Meagher wrote: [...] (...) [...] (...) [...] Gail, From a person working at the SEE Science Center in Manchester NH where a LEGO railroad is running through a 19th century mill city. Motors will last "1-3 weeks. That is at 5 hours a day 7 days (...) (18 years ago, 18-Jul-06, to lugnet.trains.org)
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